Chemical Engineering - Process Control and Instrumentation

26. 

Which of the systems having the following transfer function is stable ?

A.
B.
C.
D.

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

27. 

The calibration data of a thermocouple with its cold junction at 0°C are given below.

The hot junction of the thermocouple is placed in a bath at 80°C, while its cold junction is at 20°C. What is the emf of thermocouple ?

A. 3.26 mv
B. 0.80 mv
C. 2.46 mv
D. 2.43 mv

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

28. 

A mercury barometer measures the __________ pressure.

A. atmospheric
B. gauge
C. vacuum
D. absolute

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

29. 

Positioning controllers are used for

A. low loads
B. temperature changes
C. high loads
D. flow rate changes

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

30. 

The amplitude ratio for the sinusoidal response of a __________ is 1.

A. first order system
B. second order system
C. transportation lag
D. none of these

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.